With Filestar you get 80 different skills for working productively with NIST Sphere (.nist) files.
About .Nist
Name
NIST Sphere
Extension
.nist
Format
Binary
Category
Audio
Developer
National Institute of Standards and Technology
Description
SPHERE (SPeech HEader Resources) is a file format defined by NIST (National Institute of Standards and Technology) and is used with speech audio. SoX can read these files when they contain μ-law and PCM data. It will ignore any header information that says the data is compressed using shorten compression and will treat the data as either μ-law or PCM. This will allow SoX and the command line shorten program to be run together using pipes to encompasses the data and then pass the result to SoX for processing.